Finding the Fourth Proportional to 9,900.01, 13,645.75 and 7,907.05

Step by Step Solution

1. Step 1: Write the proportion equation
   9,900.01 : 13,645.75 = 7,907.05 : x
2. Step 2: Convert to fraction form
   9,900.01/13,645.75 = 7,907.05/x
3. Step 3: Cross multiply
   9,900.01x = 13,645.75 × 7,907.05
4. Step 4: Simplify right side
   9,900.01x = 107,897,588.00
5. Step 5: Solve for x
   x = 107,897,588.00/9,900.01
6. Step 6: Final answer
   x = 10,898.74